Just to throw this out there, I'm running into the same issue. The assualt seems to go off without a problem, intercepted that one or two flights of enemy fighters (sometimes it seems only one launches, with a possible second one showing up on radar once then never appearing again), I do the acknowledgment that enemy fighters were destroyed where they say to stay on station after, and then just kind of circle in the pattern waiting for an RTB that never comes.
Not sure if there some trigger I'm missing, but there's nothing in the F-10 menu for me after that point. All of the fighters in the strike package seem to leave as well, and I'm the only one flying around for some time after.